Sustainable forestry is not an option; it's an obligation.

当你不清楚某个项目该如何定价时，不妨直接问他怎样才算公平？他们的回答通常就是他们觉得自己该有的价值。

The highest art is to conceal art.

The best way to predict the future is to invent it.

The best way to find out if you can trust somebody is to trust them.

Every ton of aggregate we produce carries the weight of responsibility—to our customers and our communities.

最有价值的碳氢化合物分子是我们不需要燃烧的那种。